Inseam-trimming machine



Nov. 20 1923.

A. B. FOWLER INSEAM TRIMMING MACHINE 4 Sheets-Sheet 1 Filed Jan. 2, 1920 I Inventor mine 5 s V Nov. 20 1923.

A. B. FOWLER INSEAM TRIMMING MACHINE Filed Jan. 2, 1920 4 Sheets-Sheet 2 Inventor mtness M 3 QJU Nov. 20; 1923.

A. B. FOWLER INSEAM TRIMMING MACHINE Filed Jan. 2, 1920 4 Sheets-Sheet 3 mine 3 s Jada/73w 19230 I A. B FOWLER INSEAM TRIMMING MACHINE Filed Jan 2, 1920 4 Sheets-Sheet 4 M itn/e s s I nz/en/ tor EMW. y W

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ALFRED B. FOWLER, 0F BEVERLY. MASSACHUSETTS, ASSIfG-NOR TO UNITED SHOE MA- CHINERY CORPORATION, OF PETERSON, NEW] JERSEY, A CORPORATION OF NEW JERSEY.

INSEBIPiI-TRIMTVIING lJACHI NE.

.ap plication filed January 2, 1920. Serial No. 3 18,8255.

To all whom it may concern:

Be it known that I, ALFRED FOWLER, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Inseam-Trimming Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to trlmmin machines and more particularly to machines for trimming the inseams of both turn and welt shoes, although the present embodiment of the invention is designed especially for trimming the inseams of turn shoes.

The object of the invention is to simplify the construction and improve the mode of operation of this class of machines.

T 0 this end the features of the invention consist in certain constructions, arrange ments and combinations of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art.

The several features of the invention will be clearly understood from the following description and accompanying drawings in which:

Figure 1 is a front elevation, partly in section, of the upper portion of an inseam trimming machine embodying the features of the invention in their preferred form; Fig. 2 is an enlarged sectional plan view .of a portion of the trimming knife and the work guiding and feeding means; Figs. 3 and 4: are side and front elevations, partly in section, of the parts of the machine illustratcdin Fig. 2; Fig. 5 is a side elevation of the portion ofthe machine illustrated in Fig. l with a part of the top cover of the casing shown in section; Fig. 6 is an enlarged sectional plan view of the grinding wheel for the knife and the mechanism for operating the grinding wheel; Fig. 7 is a plan view of the machine with the top cover of the casing removed; Fig. 8 is a detailed sectional view taken on trated machine is provided with a frustoconical trimming knife 2 having a circular cutting edge. The front side of the knife is covered. and protected by a knife guard 4 having an opening 6 in its lower end to permit the work to be presented to the knife and to permit members of the work guiding and feeding means of the machine to be located in close proximity to the cutting edge of the knife. As the work is fed the projecting edge of the upper is turned up in advance of the cutting edge of the knife by a feed roll 8 engaging the outer side of the inseam substance, and also by a swiveled shoe or plow l0 engaging the inner side of the inseam substance.

The plow 10 also engages the top of the above the shoe bottom and cooperates with the flattened end portion 12 of the knife guard 4' engaging the sole of the shoe to prevent trimming too closely. The shoe is further guided by a guide roll 14: engaging the body thereof opposite the edge of the shoe sole.

The feed roll 8 is frusto-conical with its larger end directed downwardly,- and is constantly rotated about an axis which is inclined across the inseam and away from the knife so that the feed roll not only acts to feed the work but also has a wiping action to turn up the projecting edge of the inseam. Moreover the inclination of the axis of the feed roll permitsthe roll to extend substantially over the cutting edge of the knife to cause the bite of the roll 8 and the plow l0 to be located in close proximity to the cutting edge of the knife. The feed roll is secured to the lower end of a shaft 16 which extends through and is journaled in a bearing in the knife guard 4. The shaft 16 is driven to rotate the feed roll continuously by means of a pulley 18'secured to the upper end thereof which is connected by a belt 20 with a pulley 22 carried by a driving shaft 2 1 journaled in bearings in the rear portion of a casing 26 enclosing the head of the machine, the belt 20 being guided between the pulleys 18 and 22 by id'lers 28.

Considerable ditficulty has heretofore been experienced in trimming the inseam of a turn shoe so that the lining will be evenly trimmed, the lining being more difiicult to out than the leather vamp. Certain novel features of construction and arrangement of the member 10 improve the quality of the work, as will be explained; This member has a flat face that slides on the inseam substance and is beveled (see Fig. 3) so that its point of greatest pressure on the inseam substance will be at the plane of trimming. The trailing end of this face is as close as possible to the working point of the knife without touching the latter, to sustain the inseam substance against the drag of the knife so that the work will not be bent by the latter (see Fig. 11). The leading end of the member 10 curves away from the inseam substance so as to deflect inwardly inclined portions of the inseam substance to upright position. In this respect the action of the member 10 is like that of a plow. V

The member 10 is so mounted as to maintain pressure of the inseam substance against the feed roll, thus cooperating with the latter to feed the work in addition to exercising its other functions. To this end the plow is mounted on the lower end of an arm 30, the upper end of which arm is secured to a pivot shaft 32 extending through and journaled in a bearing in the knife guard 4. The shaft 32'is urged in a direction to press the plow 1O yieldingly toward the feed roll by means of a coiled spring 3 1 having one end connected to an arm 36 secured to the outer end of the "haft 32. This movement of the plow 10 by the action of the spring 34 is limited by the engagement of an adjustable stop :"crew 37 with a stop lug 38 on the knife guard 4 (Figs. 4L and In order to permit the work to be initially placed in operative position, the plow and feed roll are adapted to'be separated. This may be accomplished by means of a treadle actuated rod 39 connected with the arm 36 so that upon depression of the treadle rod the shaft 32 will be turned in a direction to swing the plow away from the feed roll.

In-order that the shoe may be readily swung and the projecting edge of the inseam uniformly ralsed 1rrespect1ve of the swinging of the shoe, the plow 10 is pivthe projecting edge of the inseam. The.

plow is secured to or made integral with the lower end of a vertical pin 40 the location of which is shown best by Figure 11. The leading end of the member 10 is normally urged toward the feed roll 8 by a spring 46 hereinafter described and this urging is supplemented by the frictional drag of the inseam substance on said member. The axis of the pin 40 isso close to the line of drag of the knife that the said line is almost on dead center relatively to said axis. These desirable conditions could not exist if a roll were relied upon to sustainthe inseam substance against the drag of the knife. The pin 40 is pivotally mounted in a bearing sleeve 42 which is held in position by a split clamp 44 formed on the lower end of the arm 30. The pin 40 is caused to be turned in the sleeve 42' to urge the free end f the plow toward the feed roll by means of a torsion spring 46 having one end secured in the clamp and its other end secured to the plow. This pivotal movement of the plow is limited by the engagement of a stop pin upon the upper end of the pivot pin l0 with a lug at the upper end of the bearing sleeve 42. The bearing sleeve 12 is vertically adjustable in the clamp 4: to vary the vertical position of the plow 10 and thereby vary the distance between the sole and the trimming cut.

The guide roll 14 which as hereinbefore described engages the body of the shoe, comprises a horizontal disk rotatably mounted on the forward end of a bar 49 which is secured to a bracket 50 projecting from the machine frame. In order to adjust the roll toward and from the vertical plane of the inseam according to the width of sole-extension, the bar 4-9 is .adjustably secured to the bracket 50. To this end the bar 49 extends into a horizontal socket in the bracket 50 and is adjustably held therein by a screw threaded into the bracket.

The chips or trimmings removed from the inseam are guided by the chip guide 51 projecting from the arm 30 toward a chip chute 52 which extends rearwardly and downwardly through the machine frameand is provided at its lower end with a suction fan to draw the trimmings from the machine. The forward end of the chip chute is formed in the knife guard l.

The knife guard is pivotally mounted on.

the machine frame by means of a vertical pin 56 extending through and secured to lugs on the knife guard which Vertical p111 extends through and is pivotally mounted latch 60 secured to the casing sons to en gage a lug 62 on the knife guard.

The trimming knife is detachably fas tened to a rotary carrier 66 arranged on a tationary stud 68. One end of the latter fastened in socket formed in a fixture 60 and is longitudinally adjustable in its socket to take up wear between it and the rotary carrier 66. Furthermore, the :stud and the bearing surface of the rotary carrier are tapered so that the wear will be taken up by longitudinal adjustment of the This provision is made to avoid vibrat-ion of the knife which would otherwise occur as a result of looseness between the carrier and the stud. he fixture 70 is adjustable so as to compensate for the wearing away of the knife dueito sharpening. The lines of adjusting movement are parallel to the line of conicity at the work-engaging portion of the knife and'in consequence thereof a fixed relation may be maintined between the workengaging portion and the various other work-engaging elements hcreinbeforedescribed. The frame of the machine is provided with a plane surface 72 which is parallel to the aforesaid 'ine of conicity and the fixture 70 is aruanged on said surface so as to-be guided hereby for purposes of adjustment. A rew 76 is provided for making the necesadjustment, the threaded part of the low engaging an internal thread on the member 70. The screw is anchored to the frame so that it may turn but not move lengthwise. The member 70 is further serurcd to the frameby clamping bolts 78 eX- teuding through slots 80. the bolts being 'iz'eferably tightened excepting when an adustment is being made. I

A belt .82 is used to rotate thetrimming l-cnife and for this purpose the knife-carrier is formed to provide a pulley as indicated at The driving pulley would preferably be located at or nearthe lower end of the standard on which the head of the machine is mounted, and in such case the belt may conveniently be guided to; and from the pulley 8 5 by pulleys 86, 88. As shown by Figs. 7 and the pulley 86 splined on the shaft 241- so as to impart rotation to this shaft for drivingthe feed-roll 8; Furthermore; the pulley 88 is mounted on the hub of pulley 86 so as to be free to rotate in the opposite direction. inovablein unison lengthwise of the shaft 2 1 to follow the pulley 84: as the fixture 70 adjusted. I v

The cutting edge of the trimming knife is sharpened by a rotary grinding wheel 90 which is-arranged with its axis transverse to the axis of the trimming knife. The grinding element is annular and-is mounted in a flanged plate 92 secured to the forward end of-a shaft 94. This shaft is journaled in a bearing96 in the frame of the machine and its forward end extends These two pulleys are through a sliding sleeve 98 keyed to the arranged adjacent to the rear end of the bearing 96. The grinding wheel has provision for adjustment toward and from the trimming knife. To this end a worm wheel 108 is threaded on the sleeve 98 between the forward end of the bearing 96 and the washer on the sleeve. The worm wheel is engaged by a worm 110 formed on the inner end of an upwardly inclined shaft 112 having a hand wheel lid on its outer end which is conveniently accessible to the operator. With this construction it will be seen that the operator by turning the shaft 112 may adjust the grinding wheel toward and from the cutting edge of the trimming knife as desired.

A belt 116, driven at the base of the machinc, transmits rotation to' the pulley 106 to drive the grinding wheel 90. The stretches of the belt are guided by a guide pulley 118 mounted on a bracket projecting from the frame of the machine and by a tension pulley 120 that is mounted. on a lever 22 pivoted at one end on the frame of the machine. The lever 122 is urged by a spring 124 to exert tension on the belt 116; 'When it is desired to stop the rotation of the grind ing wheel 90. the lever 122 may be swung downwardly by the operator against the" action of the torsion spring 124 thereby slack i is outerside of the pro made in two parts, the upper part being hinged at 128 to the lower part to form" a cover.

bers movable withcthe guard away from the knife.

2. An inseam trimming machine having, in combination, a rotary trimming knife, a knife guard having provision for movement away from the knife to permit access to the knife, a feed rollmounted on the guard, and means for rotating the feed roll to feed the work. l

An inseam trimming machine having, in combination, a rotary trimming knife, a knife guard having provision for movement away from the knife to permit access to the knife, work guiding members for engaging opposite sides of the projecting edge of theinseam mounted on the knife guard, and means for relatively moving said members toward and from each other.-

4. An inseam trimming machine having, in combination, a tubular trimming knife having a circular cutting edge, a knife guard substantially covering the cutting edge of the knife having provision for movement away from the knife to per it access to the knife, and means mounted on the knife guard for guiding and feeding the work to the knife.

5. An inseam trimming machine having, in combination, a. rotary trimming knife, Work guiding members arranged adjacent the cutting edge of the knife for engaging opposite sides of the projecting edge of the inseam of a shoe, and means for simultaneously moving said guiding members away from the knife to permit access to the knife.

6. An inseam trimming machine having,

in combination, a rotary trimming knife,

means for guiding and feeding the work thereto comprising a feed roll engaging the 'ecting edge of the inseam and a plow-shaped member pivotally mounted with its axis substantially perpendicular to the shoe sole, and a spring tending to turn said plow-shaped member about its axis to engage yieldingly the inner side of the projecting edge of the inseam.

7. An inseam trimming machine having, in combination, a rotary trimming knife, means for guiding and feeding the work thereto comprising a feed roll engaging one side of the projecting edge of the inseam and a plowhaped member engaging ncense the other side of the projecting edge pivotally mounted to turn about an axissubstantially perpendicular to the shoe sole and having one end directed away from the knife, and a spring tending to turn said plow-shaped member about its axis to urge said iid toward the feed roll.

8. An inseam trimming machine having, in combination, 'a rotary trimming knife, means for guiding and feeding the work comprising a feed roll for engaging one side'of the projecting edge of the inseam and'aplow shaped member for engaging the other side of the projecting edge of the inseam, means for yieidinglyurging the plow-shap'ed member toward the feed roll, and means under the control of the operatorfor moving the plow-shaped member away from the feed roll.

9. An inseam trimming machine'having, in combination, a rotary trimming knife, and means for guiding and feeding the Work comprising a frusto-conical feed roll engaging the outerside of the projecting edge ofthe inseam having its larger end directed toward the shoe sole and having a substantially vertical axis inclined transversely ofthe direction of feed toward the center of the sole and inclined away from the knife,

10. A machine of the character described comprising means for trimming off surplus I ins-earn substance and including a trimming knife the cutting action of which is toward the'medial line of the shoe, a member arranged to brace the inseam substance against the drag of said knife and to maintain the inseam substance in upright position at; the working point of said knife, and a feed roll arranged to cooperate with said member to bend inclined portions of the inseam sub stance to said upright position.

11. A machine of the character described comprising means for trimming off surplus inseam substance and including a trimming knife the cutting action of which is toward the median line of the shoe, a member arranged to bear on the bottom of'the shoe at the inner side of the inseam to regulate the closeness of trimming and having a substan tially fiat surface arranged to brace the uutrimmed inseam substance against the drag of said knife, and a feed roll arranged to en gage the outerside of the substance to be trimmed so as to act conjointly with said flat surface to feed the work.

12. A machine of the character described comprising trimming means including a knife arranged to trim off surplus inseam substance, and feeding means including two members arranged to feed the work by nipping between them the substance to be trimmed off, one of said members being a driven roll and the other being arranged to sustain the working stress of said knife and to regulate the closeness of trimming.

mg member and a non-rotary feeding member arranged to cooperate to grip said material by engaging respectively the outer surface and inner surface thereof.

15. An inseam trimming machine having, in combination, a rotary trimming knife, means for guiding and feeding the work to the knife comprising members engaging 0pposite sides of the inseam, and means for separating said members and for moving said members in'a direction away from the knife.

16. A machine for trimming surplus material from the between-substance of a sewn shoe, comprising a trimming knife, and work-feeding means including two cooperativefeeding members arranged to grip said surplus material, one of saidmembers being a driven roll, and means for maintaining a continuous gripping co-action of said members.

17 A machine for trimming surplus material from the between-substance of a sewn shoe, comprising a trimming knife, and work-feeding means including two cooperative feeding members arranged to grip the surplus material to be trimmed from the between-substance, one of said members beinga driven roll arranged to act on the outer side of said surplus material.

18. A machine for trimming surplus material from the between-substance of a sewn shoe. comprising work-feeding means including a feed-roll and another member arranged to cooperate to grip the surplus material to be trimmed from the between-substance, and a trimming knife arranged to trim between said feed-roll and the seam of the shoe.

19. A machine for trimming surplus ma terial from the between-substance of a sewn shoe, comprising a trimming knife, and work-guiding means including a member for deflecting said surplus material to a restricted trimming locality, said member being swiveled to oscillate about an. axis substantially perpendicular to the bottom of the shoe.

20. An inseam trimming machine having, in combination, a rotary trimming knife, and means for guiding the work thereto comprising a plow-shaped arm engaging a side of the projecting edge of theinseam pivotally mounted with its axis substantially normal to the shoe sole and having its free end directed away from the knife,anc1 means tending to turn said arm about its axis to yieldingly urge its free end toward the projecting edge of the inseam.

21. An inseam trimming machine having, in combination, a rotary trimming knife, a knife guard mounted for movement away from the knife. to permit access to the knife, and. a chip chute movable with the guard away from the knife. I

22. An inseam trimming machine having, in combination, a rotary trimming knife, a knife guard having provision for movement away from the knife to permit access tothe knife, and a chip chute and work guiding and feeding members movable with the guard away from thekinfe.

23. An inseam trimming machine having, in combination, a rotary trimming knife, means for adjusting the knife longitudinally, means for guiding and feeding the work to the knife comprising a feed roll, a shaft, connections between the shaft and feed roll for driving th feed roll, means for driving the shaft and knife comprising a belt, a pulley rotatable with the knife over which the belt passes, two pulleys mounted on the shaft over which stretches of the belt pass, said pulleys movable in unison longitudinally of the shaft, one of said pulleys keyed to the shaft to drive the shaft by the travel of the belt and the other pulley free to rotate about the shaft whereby the longitudinal adjustment of the knife varies the 1011- gitudinal position of the pulleys on the shaft, and means for driving said belt.

24; An inseam trimming machine having. in combination, a rotary trimming knife, work guiding and feeding members cooperating with the knife, means for adjusting the knife toward and from said guiding and feeding members, a rotary grinding wheel having its axis arranged transverse to the axis of the knife supported in operativerelation with the knife, and means for adjusting the grinding wheel toward and from the knife.

25. A machine for trimming surplus material froin'the between-substance of a sewn shoe, comprising a rotary trimming knife having an annular cutting edge. means for guiding and feeding the work thereto, said knife being adjustable in straight lines toward and from said means, and a rotary grinder having a plane end face arranged to sharpen said knife, said plane face being parallel to said lines of adjustment.

26. An inseam trimming machine having, in combination, a rotary trimming knife, a feed roll arranged to'operate on one side of the substance. to be trimmed, springstressed means arranged to press said substance against said feed roll, and a guide roll arranged to roll on the body of the shoe so as to serve as a worr rest.

27. An inseam trimming machine comprising means for trimming oil"- surplus inseam substance, and means. for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance. to be trimmed, one of said members being movable about an axis to feed the work and one of them being movable about another axis to follow irregularities in said substance.

28. An inseam trimming machine comprising means for trimming oif surplus inseam substance, and means for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance to be trimmed, one of said members being movable relatively to the other to follow irregularities in the thickness of said substance and one of them being otherwise movable to follow other irregularities.

29. An inseam trimming machine comprising means'for trimming off surplus inseam substance, and means for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance to be trimmed, one of said members being movable relatively to the other to follow irregularities in the thickness of said substance and being swiveled so as to follow other irregularities.

30. An inseam trimming machine comprising means for trimming 01f surplus inseam substance, and means for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged toremain continuously in contact with opposite sides of the substance to be trimmed, one ofsaid members being rotatable to feed the work and the other being swiveled to follow irregularities in said substance.

31. An inseam trimming machine comprising means for trimming off surplus inseam substance, and means for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance to be trimmed, one of said members being movable about one axis to follow irregularities in the thickness of said substance and movable about another axis to follow other irto said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance to be trimmed, and a spring-stressed carrier by which one of said members is carried to press against said substance and relatively to which it may yield to accommodate irregularities in the work; 7

33. An inseam trimming machine comprising means for trimming off surplus inseam substance, means for guiding the latter to said trimming means, said guiding means comprising cooperative members arranged to remain continuously in contact with opposite sides of the substance to be trimmed, and a spring-stressed carrier by which one of said members is carried to press against said substance and relatively to which it may oscillate about an axis so as to follow irregularities in the work.

84:. An inseam trimming machine com prising means for trimming ofi surplus inseam substance, a work-guiding member and a spring-stressed carrier therefor arranged so I that said member is normally pressed against one side of said substance, said member being swiveled so as to turn relatively to said carrier about an axis substantially perpendicular to the plane of theshoe bottom, and means arranged to engage the opposite side of said substance so as to cooperate with said member in guiding the work to said trimming means.

35. A machine of the character described comprising a rotary circular knife for trimming off surplus inseam substance, and means for guiding the work to said knife including a pivotally mounted member arranged to engage one side of the substance to be trimmed so as to sustain the latter against the drag of said knife, the pivotal axis of said member being so related to the cutting point of said knife that the line of said drag is substantially on dead center relatively to said axis.

36. A machine of the character described comprising means for trimming off surplus inseam substance and including a knife having an endless cutting edge extending trans-- versely'of the substance to be trimmed, a

'work-engaging member having a corner formed and arranged to occupy the angle formed by the cutting edge of-said knife and that surface of the inseam substance from which said edge proceeds,'so as to brace said substance against the drag of the knife, and a driven roll arranged to act onthe opjunction with said bracing member to guide and feed the work to said knife.

37. A machine of the character described comprising means for trimming ofi surplus inseam substance, and means for guiding the work to said trimming means including two" .posite surface of said substance and in concooperative members arranged toengage opposite sides of the substance to be trimmed, one of said members having a flat face arranged to slide on said substance and being pivotally mounted so that the frictional drag of said substance thereon Will develop a tendency to swing the leading end thereof to- Ward the other one of said members.

38. An inseam trimming machine comprising means for trimming off surplus in- 1 seam substance, a guard movable toward and from the Working point of said means, and Work-feeding means carried by and movable with said guard.

ALFRED B. FOWLER. 

